Former for manufacturing sanitary drinking-cups



A. NELSON AND B. B. AVERY.

FORMER FOR MANUFACTURING SANITARY DRINKING CUPS.

APPL'ICATlON FILED APR-4, I918.

Patented June 1, 1920.,

2 SHEETS-SHEET 2.

A. NELSON AND B. B. AVERY.

FORMER FOR MANUFACTURING SANITARY DRINKING CUPS.

APPLICATION FILED APR.4. 1918.

1,841,833, Patented. June 1, 1920 2 SHEETS-SHEET 1.

a r E ALEXANDER NELSON, OF NEWARK, NEW JERSEY, AND BENJAMIN B. AVERY, OF NEW YORK, N. Y., ASSIGNORS, BY MESNE ASSIGNMENTS, TO GERMPROOF CUP CORPO- RATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented June a, 1920.

Application filed April 4, 1918. Serial No. 226,594.

To all whom it may concern:

Be it known that we, ALEXANDER NELSON and BENJAMIN B. AVERY, citizens of the United States, residing at Newark, Essex county, State of New Jerse and New York city, county and State of New York,respectivel have invented certain new and useful mprovements in Formers for Manufacturing Sanitary Drinking-Cups, of which the following is aspecificatlon. V

This inventionrelates to the manufacture of sanitary drinking cups, the object thereof being to provide an improved former for folding the side edges of a cup blank a plurality of times thereby to hold such side edges against separation, one of the obyects of the invention being to provide an improved cup blank former whereby the use of feeding and pressure rollers for folding and feeding, the edges of the cup blank may be doneaway with and a much simplified as well as eflicient cup blank folding means provided.

In the drawings accompanying and forming a part of this specification, F1gure 1 illustrates a portion of a web of paper severed to form a cup blank. In practice however, the cup blanks are formed from a continuous web of paper carried by a roll, and each blank is severed as it passes throu h the machine for the purpose of forming t e cup; Fig. 2 is a perspective view of a cup folded from the blank withthe locking flap unfolded; Fig. 3 is a perspective view of the completed cup; Fig. 4 1s a new of part of the machine illustrating the former in position and the manner in which the cup is fed thereto and therefrom; Fig. 5 is a cross sectional view taken on the line 55 Fig. 4; Fig. 6 is a cross-sectional view taken on the line 6-6 Fig. 4;--thesei two views illustrating different positions of the folded edges of the on blank as it passes through the former; ig. 7 is a top view of one of the former members; Fig. 8 is a face view of the former member shown in Fig. 7 Fig. 9 is a top view of the other formermember; and Fig. 10 is a face view of the former member shown in Fi 9.

Similar c aracters of reference indlcate corresponding parts in the several figures of the drawings.

The present improved former comprises a pair of members 10 and 11. The member 10 comprises what may be considered herein as the outside member andis provided with a curved apronformed portion 12 for directing and guiding one end of the cup blank. This apron 12 extends transversely or at an angle to the former portion proper of the member 10 and is preferably formed integral therewith. The member 10 comprises a flat back portion 13, each side edge of which is curled inwardly as at 14, which curl gradually increases toward the bottom of the member 10, at which point the edge of the former is practically folded upon itself twice, such folds being suitably spaced for the passage of the blank edges whereby the curled edges of the blank may be said to taper from their upper ends to their lower ends, so that they somewhat resemble the curled petals of some well known flowers. The other member 11 of the former likewise comprises a transversely extending shelf portion 15 and a plate portion 16 having its sideedges bent inwardly as at 17' for a part of the height of the plate and cut away as at 18, so that the width of the plate is less at the lower portion thereof than at the upper. The member 11 has its inwardly bent side edges 17 so formed as to fitwithin the curled side edges of the member 10 in such position that a blank will pass between the plate portions 13 and 16 of the two formers and have its" edges guided by the bent and curled side edges of the formers in such manner as to fold the same twice and thus lock the side edges of the blank to farm and folds the cup blank at aacertain point transversely of its length and forces the so folded cup blank down into the former after one end of the cup blank is guided up the .a ron 12 in the manner shown in Fig. 4.

ien the folded cup blank has sufficiently passed through the former, its lower end [rsengaged by a pair of rollers 70, which gun the folded cup blank through the forme are sufficiently close together to compress the folded side edges of the blank as the side edges are folded during the passage of the blank through the former, and "as they pass between the roller 70 these side edges are suitably crimped. When the cup blank has passed between the roller 70 a suitable reciprocating tucker 80 operated by any suitable means moves in position to engage the flap portion 51 of the blank and force it between one of the rolls 70 and a companion roll 71 whereby this flap is bent over the rear of the cup in the manner shown in Fig. 3 thereby to form a lock for the side edges as well as a smooth mouth edge for the cup.

In carrying out this improved method of making sanitary drinking cups, the web of paper or other thin material either of parafiin paper or otherwise, as may be found desirable, is conveyed into position and suitably severed transversely thereof to provide a cup blank 50, which is then folded along the line 52 and substantially midway of its length excluding the flap portion 51 by the reciprocating folder blade 60. This folder blade reciprocates to carry the cup blank sufliciently far into the former so that the lower end thereof will be engaged by the two sets of rollers 7 O, which work only along the side edges of the cup. As the cup blank is fed through the former the side edges thereof are folded and infolded by the curled edge of the former member 10 around the guiding side edges 17 of the former member 16, thereby to produce a sanitary drinking cup without the use of pressure or feeding rollers, as heretofore found'necessary. ihe folding blade not only transversely folds the cup blank but also constitutes a means for pressing or pushing the blank into the former sufficiently far to enable the forward end thereof to be engaged by the roller by reason of the fact that the folder exerts its pressure upon the trans- -verse 01a of the cup blank.

It will be understood that the various details may be more or less changed without departing from the spirit or scope of the present improvement. 4

We claim as our invention:

1. A former for a sanitary drinking cup comprising a pair of spaced parallel plates, said plates having spaced-apart side edges, one having its side edges folded upon itself a plurality of times and thereby curled at each side thereof and cooperating with the side edges cf its companion plate.

2. A former for a sanitary drinking cup comprising a pair of spaced parallel plates, said plates having spaced-apart side edges, one having its side edges folded upon itself a plurality of times and thereby curled at each side thereof with a gradually increasing curl and cooperating with the side edges of its companion plate.

3. A former for a sanitar drinking cup comprising a pair of space plates, one of said plates having spaced-apart side edges curled upon itself at each side thereof, the other of said plates having bent side edges located within the curled ortions of said first plate and forming gui ing means for a cup blank.

4. A former for a sanitary drinking cup comprising a pair of spaced plates,-one of said plates having spaced-apart side-edges curled upon itself at each side thereof with a gradually increasing curl, the other of said plates having bent side edges located within the curled portions of said first plate and forming guiding means for the cup blank. 5. A former for a sanitary drinking-cup ,comprising a pair of spaced blades, one having a curved apron and one having curled side edges, and one of' said plates having bent guiding edges located within said curled side edges. 7 6. A former for a sanitary drinking cup comprising a pair of spaced plates, one having a curved apron and one having curled side edges, and one of said plates" having bent guiding edges located within said curled side edges, the curl of the side edges of one plate gradually increasing toward one end of the plate thereby to fold and infold the side edges of the cup blank;

7. A former comprising a pair of spaced plates, each having a transversely projecting portion at its upper end, one of said plates having bent side edges to form guiding edges and the other of said plates having gradually increasing curled side edges adapted to overlap the guiding edges of its companion plate.

8. A former comprising a pair of spaced plates, each having a transversely projecting portion at its upper end, one of said plates having bent side ed es to form guiding edges and the other of said plates having gradually increasing curled side edges adapted to overlap the guiding edges of its companion plate, said first plate having cut-away portions below its bent side edges.

9. A former comprising a pair of spaced plates, one having bent side edges forming guides and cut-away portions below such guides and the other having curled side edges, the curl of which gradually increases toward one end thereof, and adapted to overlap the guiding edges of said first plate.

10. A former'for a sanitary drinking cup comprising a pair of spaced plates, one of said plates having each of its side edges folded upon itself a plurality of times and thereby curled and the other of said plates having bent side edges located within the curled portions of said first plate and forming guiding vmeans for a cup blank..

11. A former for a sanitary drinking cup comprising a pair of spaced parallel plates, one of said plates having each of its side edges folded inwardly toward the center line of the plate, and then away therefrom and cooperating at its folded side edges with its companion plate.

of the plate, and then away therefrom, and

the other of said plates having bent sides located within the folded edges of said first 20 I I[plate and forming guiding means for a cup ank. Signed at New York city,'New York, this 26th day of March, 1918.

ALEXANDER NELSON.

BENJAMIN B. AVERY. 

